Multi-unit sample cooler



Oct. 4, 1960 J. H- SEBALD 2,954,965

MULTI-UNIT SAMPLE COOLER Filed Jan. 22, 1959 2 Sheets-Sheet 1 0 o O o o o O o o 3 U I E J[ o o o o o o o o oi o 23 Z o I ,1 r; I I l ZGa. RE-27 INVENTOR 24, 30a.

3203 BY 604 FIG. 3 W

Oct. 4, 1960 J. H. SEBALD MULTI-UNIT SAMPLE COOLER Filed Jan 22, 1959 2 Sheets-Sheet 2 FIG-.5

8 E l I I l II In b 4 m b um fl la 1 I l I I I I l llbllurnmux a 5 9 0 M |v8 G 6 7 6 O 5 w 5 1, z. 7 5 8 7 6 8 6 6 6 FIG.7

JOSEPH H. SEBALD INVENTOR. BY M /4 Figure 7.

United States Patent O SAMPLE COOLER Joseph 'H. Sebald, Kearny, NJ., assignor to Technical Engineered Products, Inc., Kearny, NJ., a corporation of New Jersey Filed Jan. 22, 1959, Ser. No. 788,427

9 Claims. (Cl. 257--23'5) process.

Where it is necessary to take a plurality of different samples at diiferent points in the system or from different systems the use of single unit coolers, takes up a lot of space and requires a maze of intricate piping for the introduction and return'of the cooling water.

L The present invention overcomes this problem by pro-- viding a compact and simple sample cooler including a plurality of units wherein the sample cooling units are so disposed with respect to a-common cooling system that the cooling water is adapted to flow through each of the sample cooling units at the desired predetermined flow rate for obtaining uniform samples of liquid or condensed vapor from the system.

- Accordingly, it is an object of the present invention to provide a simple and compact multi-unit sample cooler for cooling a plurality of liquid samples or condensing water vapor samples from a boiler feed system or other process system using'either liquid or steam. q,

Further objects and advantages of the invention will become evident from the following description with reference to the accompanying drawings in which:

Figure 1 is a plan view of a preferred form of the invention, broken away to show a top view of two sample cooler unit casings.

Figure 2 is a side view of the preferred form of the invention shown in Figure 1, partly in section showing .side views of several of the sample cooler units in assembled position. a

Figure 3 is a section taken on line 33 of Figure 2. Figure 4 is a section taken on line 4-4 of Figure 3. Figure 5 is a plan view of another form of the invention, broken away to show two sample cooler unit casings.

Figure 6 is'a side view of the form of the invention shown in Figure 5 partly in section to show side views of sample cooler units in assembled position.

Figure 7 is a partial cross-section taken on line 77 of Figure 6. i

Figure 8 'is a cross-section taken on line 8-8 of Referring to the drawings, Figures 1 to 4 show one extending partition 2 to divide the shell into a lower chamber 3 and an upper chamber 4. The lower chamber 3 communicates with a continuously supplied source of cooling water (not shown) by means of a cooling water Patented Oct. 4, 1960 ICC inlet 5 and the upper chamber 4 communicates with a cooling water outlet 6.

Disposed transversely of the longitudinal line of the shell 1 and extending in fluid tight connection through the partition 2 in spaced relation to each other are a plurality of liquid or stream sample cooler units generally designated a, b, c, d, etc. in Figures 1 and 2.

Each of these units includes a hollow cylindrical sample cooler casing as at 7a and 7b, etc., which casings are open attheir respective ends and of a length less than the inner diameterof theshell.

Since each of the sample cooler units is the same, only one is illustrated as shown in Figures 3 and 4 of the drawings. Thus, the casings as, for example, casing 7a in assembled position abuts that portion of the inner wallof the shell 1 which forms the lower chamber 3. Figure 3 further. shows that the casing is square across the end. Since the shell 1 is circular in cross section, this permits the casing ends to be brought into abutment with the shell to form inlet ports as shown at 8a and 9a, and 8b and 9b, etc. in Figure 2,

These inlet ports 8a and 9a and 8b and 9b, etc. will be in communication with the lower chamber 3. Thus, when fluid fills the lower chamber it will have free access into the respective cylindrical casings 7a, 7b, etc. At the end remote from the inlet ports a full open outlet port as at 10a and 10b is formed for each of the cylindrical casings because they by reason of their length will be a spaced distance from that portion of the inner wall of the shell forming the upper chamber 4. Hence, fluid which enters the cylindrical casings 7a, 712, etc. is discharged into the upper chamber 4 through these respective outlet ports and the dilferential area between the inlet ports and the outlet ports will permit the free flow of all fluids from the inlet 5 through lower chamber 3, cylindrical casings 7a, 7b, etc. and upper chamber 4 to the outlet 6. q

If the inlet ports 8a and 9a, and 8b and 9b, etc. are

: properly sized, any desired rate of flow can be obtained within'the limits of the diameter of the respective cylindrical casings and the remaining coil portions of the sample cooler units which fit therein. 7 V i It will be understood that while this type of inlet port is illustrated for this form of the invention that various other inlet ports can be devised by persons who are skilled in the art and understand their purpose without departing from the scope of the present invention. .Fitted into each of the cooler casings 7a, 7b, etc. are suitable coil means for passing the samples of liquid to be cooled or steam to be condensed therethrough.

Coil units Thus Figures 2. and 3 show that in alignment with the longitudinal axis of each of the cylindrical casings as with cylindrical casing 7a, there is an annular sample cooler flange or rim 11 having an opening 12 which is slightly less in diameter than the inner diameter of the casing 7.

Substantially integral units are adapted to be fitted through the'respective openings and to seat on the rim and such units include a carrier head 13 and a fastening head 14 which are fixedly connected to each other by any suitable means such as the rivet 15. The carrier head 13 fits in snug engagement with the opening 12 and forms a shoulder as at 16 with the fastener head 14, whichshoulder will engage the outer face of the flange or rim 1'1. The heads 13 and 14 are connectedto the rim :by suitable means such as threaded members 17.

Fixedly connected to the carrier head 13 is a cylin drical partition or baffle 18 comprising an elongated pipelike member disposed in assembled position in the center or axial lineof its respective cylindrical casing and defining therewith an annular flow passage 18d.

fastening head 14 to connect to the inlet T element 19 as is clearly shown in Figure 3 of the drawing.

The respective sample cooler inlets 21a, 21b, 21c, etc. serve to support the T elements and the coils connected thereto.

Thus, Figures 3 and 4 Shaw 'ceaaeeted te the re -peetive inlet and outlet T elements 19 and 20, inner coil 22 and an outer coil 23 which coils are spiral in shape and provide a convoluted flow path for the sample of liquid or steam delivered to the inlets 21a, 21b, etc. for the particular unit.

The T elements 19 and 20 and the coils 22 and 22; are

disposed in assinbledpos'ition to fit between the cylindrical baffle l sandthe cylindrical casings for the particular unit in the annular flow path 18a formed therebetween. Thus, there is provided substantially integral units comprising fastening heads, carrier heads, T elements and coils which can be easily positioned inside the respective cylindrical casings 7a, 7b, etc.

Since the outlet T element 20'is also offset from the center or axial line of the cylindrical casings, sample cooler'outletlines 24a, 24b, etc.-for each "of the respective units will also be offset from the center or axial line of its respective cylindrical casing. A thimbleZSa,

25b, etc. is provided for each unit in alignment with the for the particular sizfe coil utili'z'ed and-each sample cooler unit will thus always pass astandard sample to the point 'at which the tests will be made. I

In the design of these units it is desirable toobtain a flow velocity pfapproximately 5 gallons per minute and thus the epeningfa't the "point "of inletthiough the cylindrical casings 17d and 7b, 'etc. is important. It controls the volume of cooling medium that passes upwardly through the cylindrical casings. The sizing of the inlets 8a and 9a, and 8b and 9b, will depend on the size of lt'li'e inlets. Howeverfsince'theinlet ports 8a and 9a and 82') and 9b are relatively small, the construction per- "rnits' a "plura'lit'yof unis to befprovided in each sample I a, 'Second fo'rm'oj the'invention Figures 5 to 8 show a further-form of theinvention which also includes a cylindrical casing or shell 51 having a partition 52 thereacross to form-a lower chamber 53am! an upper-chamber 54; The lower chamber 53 The partition 52 is provided with a-plurality of openings asat 57a,57b,--etc. and about each of these openings offset position of the outlets 24a, 24b, etc. for the particular unit and these thimbles have threaded openings as at 260 into which is fitted a sealing means generally designated 27a. V I a Thesealing means 27a includes a reducing nipple 28a which is threaded into the thimble 26a, a gasket 29d being provided for fluid tight connection therebetween. A bore 39a extends through the reducing nipple 28a and the. bore has a diameter such that the outlet line for the particular unit is adapted to slidinglyfit through the bore as is also illustrated in Figure 3 of the drawings. v i

The outlet'end of the reducing I, nipple 28a-is necked down slightly and is threaded to permit a s'ealing'gasket 31a and a capping washer 32a threaded thereon to pr ovide the desired fluid tight connection for sealing the bore 30a. In assembled position the pressure of the capping washer 32a deforms the gasket 3111 into engagementwith the outlet line 24a to provide the necessary fluid tight arrangement.

It will be understood that while only one is illustrated in Figure 3 that each of the units are identical therewith and hence have not been described or illustrated.

an inner cylindrical baflle 58a, 581), etc. is attached to the partition. These cylindrical baffles 58a, 58b, etc. extend-upwardly and parallel to the center line of its re-,

'spective openings 57a, 57b, etc. through the upper chamber54 to a point short of the upper Wall 59 of the 'npper-ch-arnber 54. A second or outer cylindrical bafiie as at 6 0a "and 60b of greater diameter than said inner cylindrical baffies 58a,-58b, etc. is also attached to the partitic'm '52 concentric to the respective inner cylindrical baflles' 58a, 58b and like the, baffles 58a, 58b also extend'upwardlytofa point' short of theupper wall 59 just {slightly liigher than the inner cylindrical baffies 58a, 58b,'as is shown-in Figure-7 of the drawings. This arrangeinent'ofthe inner andouter cylindrical baffles forms an annular space about each o'f the respective openings 57a',- 57b, etc. which spacesreceive sample cooler coil The exterior of each sample cooler unit inlet line 21a,

211b, etc. is provided with a socket weldconnection as at 331;, etc. to provide means for connecting the specific unit to'the respective points from which samples will be taken. Similarly, the sample cooler outlet lines are threaded to provide means for connecting these individual lines to the point, not shown, to'which be taken for test. I i

In operation, the "assembled sample cooler 'is con- 7 nected to the sampling'Ipoints and to the' poin't's tdiwhich the sampled liquid or stearn will be led. In addition, the respective inlet 5 and outlet 6 are connected to a cooling water source so that cooling water entersl t he sample cooler through the inlet 5 and is discharged from the cooler through the outlet 6. 'It is noted that-the inlet 5 is larger than the outlet 6, hence the sample cooleris kept full of cooling medium at all times or'at least cooling fluid is directed into the-sample cooler-1 at a rate the samples" will a units' 'ge'nena-llydesignated M, N, etc. through the respective openings-63a, 63b, etc.-in the upper head 59in align- 1, rnent with theopenings 57a, 57b, etc. in the partition Sittind the concentric baffles:

Since all the coil units M, N, etc. are identical, only *eneeeirnnit is illustrated in Figure 7 of the drawings.

Thus}, Figure 7 shows the coil unit M as including a,

carrier head "fizand a support head '63 connected to each other. The carrier head 62 forms a shoulder as at 64 with the support head 63. and in assembled position snugly 'eng'ages the opening 63w in alignment with its particular concentric batfie beween which the coil unit fits. A"miiddle cylindrical-baffle 65' is attached to the carrier head '62 and 'in a'ssenrbled position [as shown in Figure-7 ex-tends downwardly. concentric to and between the respective 'inner; and outer 'cylindrical baflles 58a and 60a, respeotiv'ely to a'point 'ju'st'sh'ort of the partition 5.2. in this position the bafiles 58a, 60a and 65 delineat'e wan inlet; flow passage 66, a downward flow passage 67 and an upward flow passage 68, and since all 'of the baifles-have their-respective ends remote from theirattabhedends open pthe respective flow channels i-pro'vide asinuo'u's or convoluted countercurrent flow path from the .:openings' 57a, 57b, etcgin the. partition to -the-open end of the respective outer cylindrical baffle or; partition 6051, 69b, etc, v

I Thesample-liquid orvapor is cooled'by''fiowthrough a tubular coil shaped into so disposed that the inner layer 70 is in the downward flow passage 67 and the'outer layer 69 in the upward flow passage 68. The tubular coils have inlets 71a, 71b, etc. and outlets 72a, 72b, etc. which are fixedly connected into their respective carriervand support heads by a suitable sealing and locking means as shown at 73 and 74 in Figure 7. The ends of the tubular coil inlets71a, 7112, etc. and the tubular coil outlets 72a, 7211, etc. are

provided with suitable means to connect the tubular coil to the point (not shown) in the system from yvhich the sample liquid or vapor will be takena-nd to the point (not shown) where the cooled sample will be tested;

Since the inlets communicate with the outer layer of coils and the outlets connect with the inner layer of coils the cooling fluid atits relatively lowest temperature will come in contact with the sample liquid or vapor .passing through the sample cooler units at the point just before it is discharged into the outlets communicating with the point to which the sample is passed for testing. Thus,

Q the sample to be tested will be delivered at the desired temperature assuming that the coolingwater can be adjusted for this desired temperature.

As in the case of the form of the invention described with reference to :Figures 1 to 4, the outlets 57a and 57b are also sized with respect to the downward flowing passage and the upward flowing passage to provide a rate of flow to bring the sample liquid or vapor to be tested to the desired temperature. In this form of the invention it is also desired to maintain 'a water velocity of approximately 5 gals. per minute.

In operation, the assembled sample cooler has its inlet 55 connected to a source of cooling water (not shown) and discharges this cooling water through the outlet 56. In addition, each of the coil units has its respective inlets 71a, 71b, etc. connected to the point in the system from which samples will be taken and its outlets 72a, 72b, etc. connected to the point at which the samples will be tested.

The cooling fluid passes from the inlet 55 through the lower chamber 53 and openings 57a, 57b, etc. upwardly through the inlet passages formed in the inner cylindrical baflies 58a, 58b, etc.; thence through the respective downward flow passages 67 and upward flow passages 68 over the inner and outer layers 69 and 70 of the tubular coils. When it reaches the outlet of each of the outer cylindrical baflles 60a, 60b, etc. it discharges into the upward chamber 54 and then flows from the upper chamber to the outlet 56.

Flow will be regulated to approximately 5 gals. per minute by adjusting the size of the openings 57a, 57b, etc. and in addition regulating the velocity of the cooling water as it is delivered to the lower chamber 53.

In both this form of the invention and the form of the invention shown in Figures 1 to 4 the arrangement of the tubular coils permits the sizing of the tubular coil elements so that they can withstand high pressures and temperatures.

It will be understood that the invention is not to be limited to the specific construction or arrangement of parts shown but that they may be widely modified within the invention defined by the claims.

What is claimed is: I

1. In a multi-unit sample cooler, a shell having a cooling water inlet and a cooling Water outlet, a partition dividing said shell to form at least two chambers, one of said chambers communicating with said inlet and another of said chambers communicating with said outlet, a plurality of sample cooler coil units extending transversely of and in fluid tight relationship with said partition, each of said sample cooler coil units including a flow passage means to pass cooling water across said sample cooler coil unit from said inlet chamber to said of said chambers communicating with'said outlet, a plurality of sample cooler coil unitsdetachably 'mounted'in said shell in spaced relation transversely of said partition, said sample cooler coil unitseach having an inlet and an outlet for sampledfluid 'to be cooled, and flow passage means about each ofjsaid units to pass cooling water fro'mat least one of said chambers to the chamber communicating with said cooling water outlet, and means connected to the flow passage means to provide a predetermined rate of flow therethrough.

3. In a multi-unit sample cooler, a shell having a cooling 1 water inlet and a :cooling Water outlet, partition ineansdividing said shellinto at least two. chambers, one of said chambers communicating with .said inlet and another of said-chambers communicatingwith said out- .let, a pluralityof flow. passage means disposed transversely of saidpartition in spaced relation to each other,

a predetermined volume of cooling water passing through said flow passage means.

4. In a multi-unit sample cooler, an elongated shell having a cooling water inlet and a cooling water outlet, partition means dividing said shell into at least two chambers, a plurality of flow passage means disposed transversely of said partition in spaced relation to each other, said flow passage means having an inlet to receive cooling water from at least one of said chambers and to pass cooling water to the chamber connected to the cooling water outlet, a plurality of openings on said shell in alignment with said flow passage means, a sample cooler coil unit removably mounted in each of said openings and disposed to fit in the respective aligned flow passage means associated with said opening, said coil unit having an inlet and an outlet for sampled fluid, and the inlet end for each of said flow passage means constructed and arranged to provide a predetermined volume of water passing therethrough.

5. A multi-unit sample cooler as claimed in claim 4 wherein each of said sample cooler coil units include a carrier head, and a baifle connected to said head, said baffle in spaced relation to said flow passage means in assembled position to define the flow passage and direct its flow over the sample cooler coil units.

6. A multi-unit sample cooler as claimed in claim 5 wherein the inlet end of said flow passage means has the plane of its periphery normal to the flow passage means axis, and said inlet means is adapted to coact with a portion of the shell wall to provide the proper opening for providing the desired volume of cooling water passing therethrough.

7. A multi-unit sample cooler as claimed in claim 4 wherein each of said sample cooler coil units include a carrier head and a baflie connected to said head, said flow passage means including an inner partition and an outer partition, and said baflie means in assembled position disposed between said inner and outer partitions to provide a convoluted path for fluid flow.

8. In a multi-unit sample cooler, a shell having a cooling fluid inlet and a cooling fluid outlet, a partition dividing said shell into an upper chamber and a lower chamber, said lower chamber communicating with the cooling .fluid inlet, said upper chamber communicating with the cooling fluid outlet, and a plurality of sample cooler coil units mounted .in said shell in spaced relation, ea'ch'of said units including, flow passage means connected transversely of and in fluid tight connection with the partition, said flow passage means having an inlet end in communication with said lower chamber, and an outlet end in communication with said upper chamber *to pass cooling fluid thereto, and coil means fitted in said flow passage means and detaehably connected to said shell, said coil means each having an inlet v for receiving fluid to be sampled and an outlet forthe cooled sampled fluid, and the inlet means .for :said flow passage means constructed and arranged relative said shell to provide a predetermined volume of cooling fluid passing'through said How passage means.

' 9. Ina multi-unit sample cooler, a -shell having a cooling fluid'inlet and 'a cooling fluid outlet, a partition dividing said shell i into an upper chamber and a lower :chamber, said lower chamber communicating with the cooling fluid inlet, said upper chamber communicating with the cooling fluid outlet, saidpartition having a pluraltiy of openings therein, an inner cylindrical partition about each'opening extending upwardly from said partitionla' predetermined distance, an outer upwardly extending cylindrical partition connected in) saidjpartition concentric to said inner, cylindrical pa'rtitiontto form an 'annular'spac'e therewith, sample cooler coil units mounted in saidsh'ell'jand disposed to extendinto each of said annular' spaces,'each of said units including, a head, a coil connected to said head having an inlet and an outlet for fluid 'tobe sampled, and a'baifle connected to said head, said bafile disposed-in assembled position to extend downwardly between said inner and outer partitions to'provide a convoluted flow path for cooling fluid as it passes ove'r'said coil'u'nits, and said opening including "means to provide a predetermined volume of cooling fluid tobepassed through said sample cooler unit.

1 References Cited in the like of this patent "UNITED STATES PATENTS 

